155131382 has 32 divisors (see below), whose sum is σ = 277758720. Its totient is φ = 63574560.

The previous prime is 155131373. The next prime is 155131429. The reversal of 155131382 is 283131551.

It is a happy number.

155131382 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41657 + ... + 45227.

It is an arithmetic number, because the mean of its divisors is an integer number (8679960).

Almost surely, 2^155131382 is an apocalyptic number.

155131382 is a deficient number, since it is larger than the sum of its proper divisors (122627338).

155131382 is a wasteful number, since it uses less digits than its factorization.

155131382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716.

The product of its digits is 3600, while the sum is 29.

The square root of 155131382 is about 12455.1749084467. The cubic root of 155131382 is about 537.3202652702.

The spelling of 155131382 in words is "one hundred fifty-five million, one hundred thirty-one thousand, three hundred eighty-two".